Air handling units in Gwynedd
Air handling unit servicing and repairs in Gwynedd, with the visit price agreed before we come and a written report after.
- Visit price agreed before we book
- Written report after every visit
- F-gas records updated where required
How much does an air handling unit service cost in Gwynedd?
Guide price in Gwynedd: £235–£565 per unit, per visit ex VAT, with a typical job (AHU service with filter change) at £235–£565 plus VAT. Any extra work is priced and approved before it starts.
An air handling unit (AHU) is a large central unit that filters, heats, cools and moves air through a building's ductwork, often with heat recovery.
Where we work around Gwynedd
We cover all of Gwynedd, including Bangor, Gwynedd, Holyhead and Caernarfon. Wherever your premises are, the survey, quote and installation follow the same steps.
Postcode districts we cover include LL21, LL38, LL45, LL52, LL59, LL65, LL72 and SY20. Businesses across Gwynedd can combine servicing with any F-gas leak checks their systems need, which saves a separate attendance.
What we do
- Filter changes to the specified grade
- Fan, belt and motor checks
- Coil and drip tray cleaning
- Heat recovery device checks
- Repairs, upgrades and full replacement
Local guide prices for Gwynedd
These guide prices are adjusted for Wales, where labour and access costs run about 5% below the UK guide.
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| AHU service with filter change | £235–£565 | £282–£678 | per visit |
| Fan / motor replacement | £1,395–£4,695 | £1,674–£5,634 | per fan |
| Full AHU replacement | £14,195–£65,995 | £17,034–£79,194 | per unit |
Ex VAT. Filters are charged at cost for the grade specified.
What happens on a visit in Gwynedd
Inspect
We record the AHU type, condition, filter grades and controls.
Service
Filters are changed and components cleaned and checked.
Report
Readings and recommendations are reported.
Upgrade or replace
Where needed, we quote for fan upgrades or replacement.
Things to check in Gwynedd
Filters
Filter grades should match the original design or current guidance for the building.
Roof and height work
Flat roofs, high walls and atriums need the right access equipment and edge protection. We plan towers, MEWPs or scaffold before the job, not on the day.
Replacement logistics
Large AHU replacements need craneage, road closures and careful programming.
Neighbours and noise
Outdoor units near flats — common above shops — need careful siting so noise at neighbours' windows stays low. We choose positions and quieter units with that in mind.
Types of premises we cover in Gwynedd
- Warehouses and industrial: cooling for offices, mezzanines, control rooms and temperature-sensitive areas.
In Wales, systems holding 5 tonnes CO2 equivalent of refrigerant or more fall under GB F-gas rules, with regular leak checks and records; buildings with more than 12 kW of air conditioning in total also need a periodic energy inspection.
Questions about air handling units in Gwynedd
How much does an air handling unit service cost in Gwynedd?
In Gwynedd, expect about £235–£565 per unit, per visit, plus VAT. A typical job (AHU service with filter change) is £235–£565 plus VAT. Any parts or repairs are priced before we go ahead.
Do you also cover Clwyd and Powys?
Yes. Alongside Gwynedd, we also cover Clwyd and Powys. Each has its own page with local guide prices.
How long do air handling units last?
Commonly 20 years or more with good maintenance, though fans and controls may need replacing sooner.
Can you upgrade old AHU fans?
Yes. EC fan upgrades are a common way to cut energy use without replacing the whole unit.
Talk to us about your premises in Gwynedd
The visit price is agreed before we book. We reply with a guide price or available dates.